上颌尖牙阻生的滑动直丝弓矫治

Sliding Straight-Wire Appliance Treatment of Impacted Maxillary Canines

目的:探讨上颌唇侧阻生尖牙的滑动直丝弓矫治方法。方法:选择17例患者21颗上颌唇侧阻生尖牙,使用滑动机制直丝弓矫治器初步排齐上颌牙列后,开辟上颌尖牙需要的局部间隙,采用外科手术助萌,暴露尖牙唇面及牙尖,即刻粘接舌侧扣,再用链状皮圈进行正畸牵引导萌。结果:21颗上颌唇侧阻生尖牙全部排入上颌牙列,牙周状况和牙髓活力均正常。结论:通过外科助萌和滑动直丝弓牵引导萌能有效的矫治上颌唇侧阻生尖牙。

Objective：To investigate the treatment of sliding straight-wire appliance in impacted maxillary canines.Methods： 17 patients with 21 impacted maxillary canines were chosen,sliding straight-wire appliances were used to rank upper dentition at first step,then regional gap expanded,the labial surface and dental cusp of canines exposed,buttons spliced at once,and led by the guide orthodontic elastics.Results： 21 impacted canines had guided to the normal dentition,and periodontal membrane,teeth pulp were normal.Conclusions： By means of surgical and orthodontic traction,impacted canines could be guided to the upper dentition effectively.